Lacy Hosay, FNP-BC
NPI 1538683636 · Family Nurse Practitioner · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lacy Hosay, FNP-BC is a Family Nurse Practitioner provider in Saint Louis, MO (NPI 1538683636).
Provider details
- NPI number
- 1538683636
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 2017025491 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
600 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 140 | $103 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 77 | $39 |
| Complex Chronic Care Management Services for Two Or More Chronic Conditions, Each Additional 60 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99489 | 64 | $59 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 51 | $51 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $71 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 84 | 33 |
| Duloxetine Hcl | 73 | 18 |
| Methylprednisolone | 72 | 55 |
| Buspirone Hcl | 68 | 19 |
| Levothyroxine Sodium | 67 | 24 |
| Gabapentin | 64 | 21 |
| Losartan Potassium | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,517 across 101 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-07-31
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is Lacy Hosay's NPI number?
- Lacy Hosay's National Provider Identifier (NPI) is 1538683636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lacy Hosay's specialty?
- Lacy Hosay is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lacy Hosay located?
- Lacy Hosay's practice location on file with NPPES is 5000 Cedar Plaza Pkwy Ste 300, Saint Louis, MO 63128-3891.
- What is Lacy Hosay's phone number?
- The practice phone number listed in the NPPES registry for Lacy Hosay is (636) 282-0380.
- Does Lacy Hosay accept Medicare?
- Lacy Hosay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lacy Hosay's NPI active?
- Yes — Lacy Hosay's NPI (1538683636) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.